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Raw Water Intake Hose Diameter

Ply

Ply

Contributing Member
Hi all,

This is obviously not a Crusader-ONLY question but I come to this section because participation in this section rocks!!

Silly question... My raw water intake hose leading to my strainers are badged as 1 1/4" (I believe routine Shields brand)..

I'm trying to rig up a flushing system...

Does that number mean that's the inside diameter of that hose??

THanks ya'll

(P.S. I found myself without my calipers while down the boat and I don't feel like guessing...lol)
 
My Crusader CH270s are supplied with raw water using 1-1/4" hose. That's the inside diameter.

When you get your flushing system put together, how about taking a picture and putting it on here?

Good luck
Dan
 
Yes, almost ALL hose is specified by ID....

Make sure your plumbing has a positive method for sealing the unused supply inlet....any air leak on the suction side will not be good for the cooling system and engine..
 
I'm a bit unclear, Mark... Are you saying to make sure whatever I rig up has no air leaks and it only draws in the flushing solution? (Water/Pink Antifreeze)
 
Now I'm in the same boat.....if you are rigging up a temporary (for winterization only) setup, its not a huge concern.....if you are doing a permanent mod so you can do "fresh water flush after each use" then the concern is warranted....

Anything you put on the suction side of the raw water pump has to be air-tight.....basically, it means good material and good workmanship.....
 
makomark said:
Now I'm in the same boat.....if you are rigging up a temporary (for winterization only) setup, its not a huge concern.....if you are doing a permanent mod so you can do "fresh water flush after each use" then the concern is warranted....

Anything you put on the suction side of the raw water pump has to be air-tight.....basically, it means good material and good workmanship.....
Click to expand...

Ahhh I see, Mark... I'm only looking to rig up a winterizing set-up. You were spot on about the inside diameter being 1.25.

I'd love to put a permanent flush port but I'm not sure yet exactly how I want it... My sea strainers are mounted horizontally, is that common?? I sure wish they were vertical as flushing then is much simpler.
 
Ply said:
I'm a bit unclear, Mark... Are you saying to make sure whatever I rig up has no air leaks and it only draws in the flushing solution? (Water/Pink Antifreeze)
Click to expand...

I'm not Mark, but I believe that's what he meant.

Questions:

It sounds as though you are wanting to make up a flushing system that allows you to draw in antifreeze as to winterize with....... correct?
Is this engine raw water cooled, or is it equipped with a Closed Cooling system?

If raw water cooled and if you are planning to winterize your engine using this method, I would have a few cautions to mention to you!



.
 
Last edited:
RicardoMarine said:
I'm not Mark, but I believe that's what he meant.

Questions:

It sounds as though you are wanting to make up a flushing system that allows you to draw in antifreeze as to winterize with....... correct?
Is this engine raw water cooled, or is it equipped with a Closed Cooling system?

If raw water cooled and if you are planning to winterize your engine using this method, I would have a few cautions to mention to you!



.
Click to expand...

It's a FWC system, Ricardo.... My plan is fairly straight forward I think anyways.. I plan to remove the raw water intake hose at the actual thru-hull seacock.

I have a small piece of PVC pipe that will fit inside of the raw water intake hose. I have attached another longer flexible pvc hose to it also which will run to a 6 gallon bucket of antifreeze.

Any red flags there Ricardo??

Thanks again you have always been more than helpful in the past!!!
 
If you have good access to the strainers I have found you can just line up the gallon jugs close the seacock,open the clean out and pour the pink stuff a gallon at a time into the top of the strainer. At idle it's no problem. If access is tight you may want to install a bronze tee 11/4 X 11/4 X 3/4 between the hose adaptor and the strainer. A length of hose with a 3/4 nipple in the end screws into the tee. When your done put a 3/4 pipe plug in the tee. A 3/4 valve in place of the plug is quicker but, I wouldn't trust it
 
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